US9078710B2 - Orthopedic compression/distraction device - Google Patents
Orthopedic compression/distraction device Download PDFInfo
- Publication number
- US9078710B2 US9078710B2 US13/712,300 US201213712300A US9078710B2 US 9078710 B2 US9078710 B2 US 9078710B2 US 201213712300 A US201213712300 A US 201213712300A US 9078710 B2 US9078710 B2 US 9078710B2
- Authority
- US
- United States
- Prior art keywords
- collet
- elongated
- nut
- arms
- arm member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
- A61B17/7077—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for moving bone anchors attached to vertebrae, thereby displacing the vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B2017/681—Alignment, compression, or distraction mechanisms
Definitions
- the present disclosure relates to an orthopedic device that can be used for compression or distraction of bone parts.
- Elongated pins will be used herein to refer to various pins and wires, such as K-wires, used for fixating bone parts or providing anchors. Therefore, there is a continuing need for an improved orthopedic device that expands the scope and ability of the orthopedic surgeons in treating patients in a variety of conditions.
- an orthopedic device that can be used for compression or distraction of bone parts.
- the orthopedic device comprises an elongated body having first and second ends, a first arm member attached to and transversely extending away from said first end and terminating at an outer end and a second arm member transversely extending away from said elongated body and having a base portion and an outer end.
- the base portion is configured and adapted to movably engage the elongated body allowing the second arm member to be longitudinally movable along said elongated body.
- Said second arm member extends from the elongated body in the same direction as the first arm member.
- the orthopedic device also includes a locking sleeve hingeably connected to the outer end of each of the first and second arm members by a hinge joint, wherein said each locking sleeve is configured for lockably receiving an elongated pin.
- the locking sleeve comprises an elongated shaft having an elongated pin receiving bore extending therethrough and a collet provided at one end of the elongated shaft.
- the collet comprises a plurality of collet arms provided with screw threads integrally formed on their exterior surfaces.
- the locking sleeve also includes a collet nut that is threadably engaged to the collet for locking an elongated pin that is received in the elongated pin receiving bore.
- the screw threads on the exterior surfaces of the collet arms are interrupted with a band of thread-free zone and the collet nut is provided with one or more detents protruding into the band of thread-free zone and providing a mechanical interference that prevents the collet nut from being removed from the threaded engagement with the collet.
- a locking sleeve for lockably receiving an elongated pin.
- the locking sleeve comprises an elongated shaft having an elongated pin receiving bore extending therethrough, a collet provided at one end of the elongated shaft, where the collet comprises a plurality of collet arms provided with screw threads integrally formed on their exterior surfaces, and a collet nut that is threadably engaged to the collet for locking an elongated pin that is received in the elongated pin receiving bore.
- FIG. 1 is an orthographic view of an orthopedic device according to an aspect of the present disclosure.
- FIG. 2 is another orthographic view of the orthopedic device of FIG. 1 .
- FIG. 3 is an exploded orthographic view of locking sleeves according to an aspect of the present disclosure.
- FIG. 4 is an elevation view of the locking sleeves with the collet nut on one of the locking sleeves cross-sectioned.
- FIG. 5 is an exploded orthographic view showing the threaded collet end of a locking sleeve and a collet nut where the collet nut is shown in cross-section.
- FIG. 6 shows an example of a pin Spanner wrench that can be used to turn the collet nut according to one embodiment.
- FIG. 7 shows a detailed view of a collet nut according to another embodiment.
- FIGS. 1-2 show an orthopedic device 100 that can be used for compression or distraction of bone parts according to an aspect of the present disclosure.
- the orthopedic device 100 comprises an elongated body 110 having first end 10 and a second end 20 .
- a first arm member 112 extends away from the first end 10 in a direction transverse to the elongated body 110 and terminates at an outer end 112 a .
- the first arm member 112 can be integrally formed with the body 110 or otherwise attached to the body 110 .
- a second arm member 111 transversely extends away from the elongated body 110 and terminates at an outer end 111 a .
- the second arm member 111 is configured with a base portion 113 that is configured and adapted to movably engage the elongated body 110 allowing the second arm member 111 to be longitudinally movable along the elongated body.
- the elongated body 110 is provided with ratchet teeth 110 a along its length for engaging with the base portion 113 .
- the base portion 113 is configured with ratcheting mechanisms that can selectably operate in compression or distraction mode.
- the base portion 113 can be configured with a mode selector switch 117 that can be used to switch between the compression mode and the distraction mode.
- the ratcheting mechanism is configured so that the selector switch 117 not only changes the direction of the base portion's movement but also changes the locking direction of the device. This allows the desired compression or distraction to be maintained once it is reached.
- the second arm member 111 In the compression mode, the second arm member 111 is locked from moving in the distraction direction 202 and can only move in the compression direction 201 . Conversely, in the distraction mode, the second arm member 111 is locked from moving in the compression direction 201 and can only move in the distraction direction 202 .
- the base portion 113 also can be configured to have a neutral position for the selector switch 117 which will allow the second arm member 111 to freely move along the elongated body 110 .
- the second arm member 111 is moved by turning a turning key handle 115 which is connected to a shaft 116 that actuates the internal mechanism of the base portion 113 .
- the internal structure of the base portion 113 although not shown, is configured with a ratcheting mechanism utilizing a rack and pinion type gear arrangement or other suitable mechanisms known to one skilled in the art.
- the elongated body 110 is provided with an appropriate mechanism for stopping the base portion 113 from sliding off the second end 20 of the elongated body 110 .
- a stop pin 119 provided near the second end 20 of the elongated body serves that function.
- the second arm member 111 extends from the elongated body 110 in the same direction as the first arm member 112 .
- the orthopedic device 100 also includes a locking sleeve 120 hingeably connected to the outer end 112 a , 111 a of each of the first and second arm members 112 , 111 by a hinge joint 121 , wherein each locking sleeve 120 is configured for lockably receiving an elongated pin (not shown).
- the locking sleeve 120 comprises an elongated shaft 124 having an elongated pin receiving bore 127 extending therethrough.
- Each of the hinge joints 121 hingeably connects one locking sleeve 120 to the outer end of one of the arm members 112 , 111 .
- the hinge axes of the hinge joints 121 are coaxially aligned and represented in FIG. 1 by a hinge axis A.
- the hinge joints 121 can be configured and adapted to be normally locked in a position and prevented from pivoting about the hinge axis A by a spring-loaded locking pin 112 b .
- the hinge joint 121 is unlocked and free to pivot about the hinge axis A.
- Each of the locking sleeves 120 is connected to the hinge joint 121 so that the elongated shaft 124 and thus the elongated pin receiving bore 127 is oriented transverse to the hinge axis A.
- the transverse orientation refers to the fact that the elongated shaft 124 and the elongated pin receiving bore 127 are at right angle to the hinge axis A.
- the locking sleeve 120 further comprises a threaded collet 220 provided at one end of the elongated shaft 124 and a collet nut 122 that is threadably engaged to the threaded collet 220 for locking an elongated pin that is received in the elongated pin receiving bore 127 .
- the threaded collet 220 comprises a plurality of collet arms 221 defining one end of the elongated pin receiving bore 127 .
- the collet arms 221 are provided with screw threads 227 integrally formed on their exterior surfaces whereby said collet nut 122 threadably engages the collets for locking the elongated pin received in the elongated pin receiving bore 127 .
- the integration of the screw threads 227 into the collet arms 221 allow for a low profile, compact design of the collet 220 .
- the collet arms 221 are defined by a plurality of slots 222 .
- FIGS. 3-5 show detailed structures of the threaded collet 220 and the collet nut 122 .
- the collet nut 122 is open at one end for receiving the threaded collet 220 and has an interior surface provided with screw threads 122 b for threadably engaging the screw threads 227 of the collet 220 .
- a through hole 122 a is provided for the elongated pin received in the elongated pin receiving bore 127 .
- the interior surface of the collet nut 122 is configured with a conical surface 122 c .
- the conical surface 122 c contacts the collet arms 221 and presses against the chamfered surfaces 221 a of the collet arms 221 and pushes the collet arms 221 radially inwards.
- the threading action of the collet nut 122 causes the collet arms 221 to move radially inward and clamp onto the elongated pin and lock the elongated pin in place.
- the screw threads 227 on the exterior surfaces of the collet arms 221 are interrupted with a band of thread-free zone 228 dividing the screw threads 227 into a lower portion 227 a and an upper portion 227 b as shown in FIGS. 4 and 5 .
- the collet nut 122 is provided with one or more detents 122 e protruding into the band of thread-free zone 228 and thus providing a mechanical interference with the upper portion 227 b of the screw threads that prevents the collet nut 122 from being removed from the threaded engagement with the collet 220 . If one tries to remove the collet nut 122 , the one or more detents 122 e and the upper portion 227 b of the screw threads would interfere with each other and prevent the collet nut 122 from being removed.
- the one or more detents 122 e are set screws and one or more set screw receiving holes 122 d are provided on the side wall of the collet nut 122 .
- the set screw receiving holes 122 d are threaded so that a set screw detents 122 e can be threaded therein.
- the collet nut 122 is threaded onto the collet 220 until the set screw receiving holes 122 d align with the thread-free zone 228 .
- the set screw detents 122 e are threaded into the receiving holes 122 d until the detents 122 e protrude into the thread-free zone 228 .
- the sectioned view of one of the collet nut 122 shows this arrangement.
- the detents 122 e can be provided in many other forms than set screws.
- the detents 122 e can be dowel pins of appropriate length that are either press fit, welded or secured in any suitable manner into receiving holes 122 d in the collet nut 122 .
- the user can lock an elongated pin received in the elongated receiving bore 127 by tightening the collet nut 122 by hand.
- the collet nut 122 can be configured and adapted to accommodate a driver tool for assisting the user in turning and tightening the collet nut.
- the driver tool can be a pin spanner wrench 300 shown in FIG. 6 and the collet nut is provided with one or more holes or recesses 122 f (see FIGS. 1 , 4 and 5 ) along the outer surface of the collet nut for engaging the pin 310 of the driver tool.
- FIG. 7 shows another embodiment of the collet nut 122 that is configured to be tightened using a cannulated driver tool (not shown) for locking/tightening the collet nut 122 .
- the hollow tubular opening of the cannulated driver tool would accommodate the elongated pin that is positioned in the elongated pin receiving bore 127 of the locking sleeve 120 .
- the through hole 122 a of the collet nut can be configured in any variety of shapes as long as it is large enough to allow the elongated pin to pass through it.
- the through hole 122 a would be provided in a shape that matches the particular driving feature of the driver. For example, if the driver is a hex, square, or star driver, the through hole 122 a would be appropriately shaped to engage the driving feature of the driver. In the example shown in FIG. 7 , the through hole 122 a has a hexagon shape for accommodating a hex tip driver.
- the orthopedic device 100 of the present disclosure is a universal device that can be used for compression or distraction of bone parts that are secured to the first and second arm members 112 , 111 by elongated pins, such as K-wires, locked into the elongated pin receiving bores 127 of the locking sleeves 120 .
- the movable second arm member 111 can be moved in compression direction 201 or distraction direction 202 by turning the turning key handle 115 .
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims (19)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/712,300 US9078710B2 (en) | 2012-12-12 | 2012-12-12 | Orthopedic compression/distraction device |
US14/212,882 US9770272B2 (en) | 2012-12-12 | 2014-03-14 | Orthopedic compression/distraction device |
US14/748,540 US20150289904A1 (en) | 2012-12-12 | 2015-06-24 | Orthopedic compression/distraction device |
US15/680,655 US10631900B2 (en) | 2012-12-12 | 2017-08-18 | Orthopedic compression/distraction device |
US16/811,536 US20200375637A1 (en) | 2012-12-12 | 2020-03-06 | Orthopedic compression/distraction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/712,300 US9078710B2 (en) | 2012-12-12 | 2012-12-12 | Orthopedic compression/distraction device |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/212,882 Continuation-In-Part US9770272B2 (en) | 2012-12-12 | 2014-03-14 | Orthopedic compression/distraction device |
US14/748,540 Continuation US20150289904A1 (en) | 2012-12-12 | 2015-06-24 | Orthopedic compression/distraction device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140163575A1 US20140163575A1 (en) | 2014-06-12 |
US9078710B2 true US9078710B2 (en) | 2015-07-14 |
Family
ID=50881771
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/712,300 Expired - Fee Related US9078710B2 (en) | 2012-12-12 | 2012-12-12 | Orthopedic compression/distraction device |
US14/748,540 Abandoned US20150289904A1 (en) | 2012-12-12 | 2015-06-24 | Orthopedic compression/distraction device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/748,540 Abandoned US20150289904A1 (en) | 2012-12-12 | 2015-06-24 | Orthopedic compression/distraction device |
Country Status (1)
Country | Link |
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US (2) | US9078710B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10603111B2 (en) | 2017-05-12 | 2020-03-31 | Coreline Soft Co., Ltd. | Computer assistance system and method for image-guided reduction of fracture |
US10905563B2 (en) * | 2015-11-06 | 2021-02-02 | Embody Orthopaedic Limited | Holder for resurfacing head implant |
US11596443B2 (en) | 2018-07-11 | 2023-03-07 | Treace Medical Concepts, Inc. | Compressor-distractor for angularly realigning bone portions |
US11607250B2 (en) | 2019-02-13 | 2023-03-21 | Treace Medical Concepts, Inc. | Tarsal-metatarsal joint procedure utilizing compressor-distractor and instrument providing sliding surface |
USD1011524S1 (en) | 2022-02-23 | 2024-01-16 | Treace Medical Concepts, Inc. | Compressor-distractor for the foot |
US11889998B1 (en) | 2019-09-12 | 2024-02-06 | Treace Medical Concepts, Inc. | Surgical pin positioning lock |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9125703B2 (en) * | 2012-01-16 | 2015-09-08 | K2M, Inc. | Rod reducer, compressor, distractor system |
EP3461437B1 (en) | 2012-12-28 | 2023-08-30 | Paragon 28, Inc. | Alignment guide apparatus |
CN104644254B (en) * | 2015-02-13 | 2016-08-24 | 四川大学华西医院 | Cervical vertebra fracture dislocation anterior approach reduction internal fixation system |
US10420593B2 (en) * | 2016-07-21 | 2019-09-24 | Warsaw Orthopedic, Inc. | Spinal correction system and method |
US10779866B2 (en) | 2016-12-29 | 2020-09-22 | K2M, Inc. | Rod reducer assembly |
WO2018183875A1 (en) | 2017-03-30 | 2018-10-04 | Paragon 28, Inc. | Bone fixation system, assembly, implants, devices, alignment guides, and methods of use |
WO2019016303A1 (en) | 2017-07-20 | 2019-01-24 | Rijksuniversiteit Groningen | Joint distractor for the spine |
CA3131564A1 (en) * | 2019-02-28 | 2020-09-03 | Paragon 28, Inc. | Fusion systems, instruments, bone plates and methods of use |
WO2022027085A1 (en) * | 2020-08-05 | 2022-02-10 | Bradley Ryan | An orthopaedic compression and distraction device and method |
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US6245071B1 (en) | 1999-03-10 | 2001-06-12 | Synthes (U.S.A.) | External fixation device for bone |
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US20120029566A1 (en) * | 2010-07-28 | 2012-02-02 | Warsaw Orthopedic, Inc. | Adjustable spinal connector assembly |
US8568417B2 (en) | 2009-12-18 | 2013-10-29 | Charles River Engineering Solutions And Technologies, Llc | Articulating tool and methods of using |
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2015
- 2015-06-24 US US14/748,540 patent/US20150289904A1/en not_active Abandoned
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10905563B2 (en) * | 2015-11-06 | 2021-02-02 | Embody Orthopaedic Limited | Holder for resurfacing head implant |
US10603111B2 (en) | 2017-05-12 | 2020-03-31 | Coreline Soft Co., Ltd. | Computer assistance system and method for image-guided reduction of fracture |
US11596443B2 (en) | 2018-07-11 | 2023-03-07 | Treace Medical Concepts, Inc. | Compressor-distractor for angularly realigning bone portions |
US11607250B2 (en) | 2019-02-13 | 2023-03-21 | Treace Medical Concepts, Inc. | Tarsal-metatarsal joint procedure utilizing compressor-distractor and instrument providing sliding surface |
US11889998B1 (en) | 2019-09-12 | 2024-02-06 | Treace Medical Concepts, Inc. | Surgical pin positioning lock |
USD1011524S1 (en) | 2022-02-23 | 2024-01-16 | Treace Medical Concepts, Inc. | Compressor-distractor for the foot |
Also Published As
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US20150289904A1 (en) | 2015-10-15 |
US20140163575A1 (en) | 2014-06-12 |
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